Friction-retained closure



" March 20,1928. 1,663,142

E. SCOFIELD I FRICTION RETAINED CLOSURE Filed Feb. 25, 1925 INVENTOR v p ATTORNEY Patented Mar. 20, 1928.

entree STATES .4 insane earner ser es.

EDGAR SCOFIELD, OF NEW YORK, N. Y., ASSIGNOR TO ANCHOR CAP AND CLOSURE 60,30. EOBATION, OF LONG ISLAND CITY, NEW YORK, A COREORATION OF NEW YORK.

FRICTION-RETAINED CLOSURE.

' Application filed'February 25.1925 Serial No. 11,433.

This invention relates broadly'to closures and more especially to a closure cap of the The type of friction'cap towhich this in- I vention belongs is adapted for use upon cylindrical mouthed vessels and is frequent- 1y used upon glass containers. Inthe manufacture of pressed glass packers jars the portion of the ware adjacent the mouth is usually formed with a slightly inwardly inclined zone near the end of the vessel, so that this portion of the container comprises a small frustrum of a Come. The zone'beneath the upwardly inclined portion is either cylindrical or inclined in the oppositedirection, namely, inclined downwardly.

Friction caps which have a single sealing zone and contact solely with the sealing wall of the vessel, very close to the mouth thereof, bear upon the inwardly and inwardlyv inclined surface, which tends to cause the cap to cam off; yet it is desirable that the cap shall be securely held'in position at this point because it isydesirable to have the rigidity adjacent to the gasket liner, which is usually employed with caps of this character. a

The presentinvention therefore has as an object, the provision of a friction sealing cap having one sealing zone adj acent, the lower edge of the skirt of the cap and remote from the end of the vessel when the cap is in place, and also another sealing zone adj acent the crown of the capto provide rigidity near the gasket.

Another object of the present invention is the provision in .a friction cap of a plurality of sealing friction zones whichsuccessively come into action when thecap'is applied to a vessel. v

A further object of the present invention is the provision in a friction cap of a plurality of friction zones so constructed that the sealing of the cap tends to increase the eflectivenessof certain of the sealing zones.

Other and further objects of the present invention will in part be obvious and will in part be pointed out hereinafter by reference to the accompanying drawings forming a part of this application, and wherein like characters are utilized throughout the figures of the drawings to represent like parts. a

Realizing that the present invention may be embodied in constructions other than those herein specifically disclosed, the disclosure herewith is to be understood as illustrative and not in the limiting sense.

Figure 1 illustrates a preferred formof the present invention.

.Figure 2 illustrates a slight modification in the friction members, otherwise the cap is similar to that shown in Figure 1.

Figure 3 illustrates a still further form of friction contact members.

Figure 4 is a view showing a package with parts broken away, which package is sealed with the. cap according tothe Present invention'.

Referring now to the drawings, andmore especially to Figures 1 and 4, the cap comprisesa crown or cover portion 1 from which depends a corrugated cylindrical skirt that may if desired be finished with a rolled edge. This skirt is provided with a sealing zone 2 which may if desired be'constructed with indentations adapted to form contact members with the side walls of a vessel 4. Preferably, a zone 5 adjacent the friction member zone 2 is an outwardly extending bead which acts in the nature of a neutral band between the upper sealing zone 2 and a lower sealing zone 6, which lower zone also may or may not be provided with indentations, as is desired. Preferably, a gasket 7 is arranged beneath the cover por tion 1 and isadapted toset against the end wall of the container 4 to form a liquid tight seal.

Ithas been observed that in applying caps made in accordance with the invention herewith, that as the cap when being telescoped over the packing vessel undergoes anaction whereby the upper zone is apparently made smaller so that when the cap'is completely pressed home the upper sealing zone exercises a very tight sealing action against the side wall of the vessel and adjacent to the gasket 7. The lower sealing zone 6 is sufficiently removed from the mouth of the container to be away from and below the conical part of the container and therefore tends to tightly hold the cap in position on the container, thereby making a secure and an efiicient seal. Furthermore, because of the provision of-the plurality of sealing zones, 1n which sealing forces are distributed, the resent cap seals equally well on vessels havmg inclined finish as Well as those having 5 a cylindrical'finish. "It'has also beenfound in connection with'this cap that the cap may be applied successfully even when canted or tilted in position on the container before the application of sealingpressure, in -thatthe cap tends to straighten itself before it :has'tbeen distorted,- as-is oftcnithe case with a canted single sealing zone cap in which "distortion is liable to make: at defective/seal. .'Having thus described my invention, what iIclaim is:

:1. In-a closure cap; :a skirt comprising a pair of annu-la r'zonesspun inwardly" to form container. grasping means, each of said zones being corrugated to adaptdt for expansion to-size it to the individualcontainer to which the closure may be applied; and a connecting band between saidzones said band being :adapted to be dcformed when the closure is applied to a container.

7'2. Jnvaxclosurecaq); a pair of concave annu lar zones forming a pair of container qgrasping' means, each of said -zones-being corrugated to render it expansible and thereby: adapt: the container v graspin g means? to be 3011'SlZed i-tothe individual container? to which the closure may be-appliedpand an annular ocnvek band .connecting sa id zones together. *3.'In1=a closure cap; a skirt comprising a pair of :annular zones'exten'ding. inwardly to form container grasping means, each of said 'rzones rbeing corrugated-to: adapt it-for-expansiontosize :itto thevindiv-idual container 'to whichthe closure maybe appliedrnnd a -sm-oothconnecting band-between said "zones. 40 ":4. Inna closure capy-askirt comprising a 'pair of annular zones spun: inwardly to form -container grasping means, said zones being "formed -with alternate indentations and prominences comprising friction lnBflDStO *retain the cap upon-a container to which-the -olosure may be applied; and a connecting 'ban d :between said zones, said band being adapted to be deformed when the closureris -applied: to: the container.

-5. In aclosure c'ap, a skirt comprising-an annular zoneextending inwardly adjacent the lower edge of the skirt to form aocon- 1 tainer grasping means, a similar zone adj ascent the crown of the. cap, said zones being formed with alternate indentations and vprominences to render the same expansible and thereby adapt the skirt of said cap to be sized to the individual container to which the closure may be applied and a plain annular band between said sealing-zones.

6. A package comprising a container having a. substantially cylindrical wall adjacent itsmouth, incoi-nbination with a closure comprising a skirt having a corrugated expanded zone grasping saidcontainer 'con- :tiguoustodts mouth, a second corrugated expanded zone grasping said container: be- :neath the first expanded zone and a-plain z-annular 'band between said sealing zones.

7. A package comprising a container havin-ga substantially cylindrical wall:- adjacent itsmouth, incornbination with a closure comprising va skirt having a corrugatedexpanded zone graspingsaid container contigiaiousito its wmouth, a second corrugated ex {panded zone -.grasping said container beneath a the first zone,-anda plain band of -metal conmeeting .said zones together.

8. In a closure cap, .askirt coinprising a pair of concave annular zones adapted to ngrasplthe-side wall of a container to which;

the closure may? be applied; anda band 'connecting said zones together adapted to yield a'i-naximum amount-when the closure is ap plied toia. container.

9. Asan article of'manufacture, 'a closure cap comprising :a cover portionya depending .skirt a pair of concave annularzones in said ,skirtndaptedto-grasp the side wall of a container-to L which'the closure. may be applied -and-a plainhbandconnecting said zones together. to permit said band-to yield amaxi- I mumamount when' the closure is applied to a suitable container. V -10. lAsvan article of manufacture, a closure cap comprising a cover portion; a depending skirt ;.a. pair of concave annular zones in said skirt adapted to grasp theside wall of a con- 'tainer to which the closure may be: applied; the lower-of said sealingv zones: being. i slight ly larger in circumference than the upper'to facilitate application thereof; and .a plain iband-connecting said zones togetherto perinit'said band-toyield a maximum amount when the closure is. appliedtoa suitablecon- 1 tainer.

.aEDGAR SCGFI'ELD. 

